/* ── Design Tokens ─────────────────────────────────────── */
:root {
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-light: #eef2ff;
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-warning: #ca8a04;
  --color-warning-light: #fef9c3;
  --color-danger: #dc2626;
  --color-danger-light: #fef2f2;
  --color-info: #2563eb;
  --color-info-light: #dbeafe;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-surface: #ffffff;
  --color-surface-raised: #f9fafb;
  --color-text: #111827;
  --color-text-secondary: #6b7280;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  --transition: 150ms ease;
}

/* ── Pico Overrides ────────────────────────────────────── */
:root {
  --pico-font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --pico-border-radius: var(--radius-md);
  --pico-primary: var(--color-primary);
  --pico-primary-hover: var(--color-primary-hover);
}

body {
  background: var(--color-surface-raised);
}

main.container {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-2xl);
}

/* ── Navigation ────────────────────────────────────────── */
nav.site-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav.site-nav ul {
  margin-bottom: 0;
}

nav.site-nav .brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

nav.site-nav .nav-links {
  display: flex;
  gap: var(--space-xs);
}

nav.site-nav .nav-link {
  text-decoration: none;
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

nav.site-nav .nav-link:hover {
  color: var(--color-text);
  background: var(--color-surface-raised);
}

nav.site-nav .nav-link[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 600;
}

/* ── Step Indicator ────────────────────────────────────── */
.steps {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  padding: var(--space-md) 0;
}

.step {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.step-number {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  transition: all var(--transition);
}

.step.active .step-number {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: white;
}

.step.active {
  color: var(--color-text);
}

.step.completed .step-number {
  border-color: var(--color-success);
  background: var(--color-success);
  color: white;
}

.step.completed {
  color: var(--color-success);
}

.step-connector {
  width: 3rem;
  height: 2px;
  background: var(--color-border);
  align-self: center;
}

.step-connector.completed {
  background: var(--color-success);
}

/* ── Cards ─────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-raised);
}

.card-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-raised);
}

/* ── Provider Cards ────────────────────────────────────── */
.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.provider-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.provider-card:hover {
  box-shadow: var(--shadow-md);
}

.provider-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.provider-card-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.provider-card p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
}

/* ── Status Badges ─────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.5;
}

.badge-connected {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge-disconnected {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  display: inline-block;
}

.badge-connected .badge-dot { background: var(--color-success); }
.badge-disconnected .badge-dot { background: var(--color-danger); }

/* Status badges for migration states */
.status-badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.status-completed { background: var(--color-success-light); color: var(--color-success); }
.status-failed { background: var(--color-danger-light); color: var(--color-danger); }
.status-skipped { background: var(--color-warning-light); color: var(--color-warning); }
.status-pending { background: #f3f4f6; color: var(--color-muted); }
.status-running, .status-downloading, .status-uploading { background: var(--color-info-light); color: var(--color-info); }
.status-cancelled { background: #f3f4f6; color: var(--color-muted); }

/* ── Hero Section ──────────────────────────────────────── */
.hero {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  margin-bottom: var(--space-xl);
}

.hero h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.hero p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
}

/* ── Page Headers ──────────────────────────────────────── */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.page-header p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* ── Tables ────────────────────────────────────────────── */
.table-card {
  overflow: hidden;
}

.table-card table {
  margin-bottom: 0;
}

.table-card thead th {
  background: var(--color-surface-raised);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary);
}

.table-card td {
  font-size: 0.9rem;
  vertical-align: middle;
}

/* ── File Browser Panels ───────────────────────────────── */
.migrate-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

@media (max-width: 768px) {
  .migrate-panels {
    grid-template-columns: 1fr;
  }
}

.panel-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 4rem;
  color: var(--color-muted);
  font-size: 1.5rem;
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.panel-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-raised);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.panel-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.panel-header select {
  margin: 0;
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  max-width: 160px;
}

.provider-select-group {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.provider-select-group select {
  margin: 0;
}

.refresh-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.45rem;
  font-size: 1rem;
  line-height: 1;
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.refresh-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.panel-body {
  padding: var(--space-md);
  max-height: 450px;
  overflow-y: auto;
  flex: 1;
}

.panel-footer {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-raised);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ── File Tree ─────────────────────────────────────────── */
.file-tree ul,
.file-tree li,
.folder-children ul,
.folder-children li,
ul.file-tree,
ul.file-tree li {
  list-style: none !important;
  list-style-type: none !important;
  margin: 0;
}

ul.file-tree,
.file-tree ul,
.folder-children ul {
  padding-left: 0;
}

.file-tree ul ul,
.folder-children ul {
  padding-left: 1.25rem;
}

.file-tree li,
.folder-children li {
  padding: 0.2rem 0;
}

.file-tree label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  font-size: 0.88rem;
  padding: 0.15rem 0.25rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.file-tree label:hover {
  background: var(--color-surface-raised);
}

.file-tree input[type="checkbox"],
.file-tree input[type="radio"] {
  margin: 0;
}

.folder-toggle {
  cursor: pointer;
  user-select: none;
  background: none;
  border: none;
  padding: 0.1rem 0.3rem;
  font-size: 0.75rem;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.folder-toggle:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.folder-toggle.open {
  color: var(--color-primary);
}

.folder-icon::before {
  content: "\1F4C1";
  margin-right: 0.25rem;
}

.file-icon::before {
  content: "\1F4C4";
  margin-right: 0.25rem;
}

/* ── Selection Count ───────────────────────────────────── */
.selection-count {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
}

/* ── HTMX Loading Indicator ────────────────────────────── */
.htmx-indicator {
  display: none;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  color: var(--color-muted);
  gap: var(--space-sm);
}

.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Progress Page ─────────────────────────────────────── */
.progress-container {
  margin: var(--space-md) 0;
}

.progress-bar-outer {
  background: var(--color-border);
  border-radius: var(--radius-full);
  height: 1.5rem;
  overflow: hidden;
}

.progress-bar-inner {
  background: var(--color-primary);
  height: 100%;
  transition: width 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  min-width: 2rem;
  border-radius: var(--radius-full);
}

.progress-stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.progress-stats .stat-completed { color: var(--color-success); font-weight: 600; }
.progress-stats .stat-skipped { color: var(--color-warning); font-weight: 600; }
.progress-stats .stat-failed { color: var(--color-danger); font-weight: 600; }

/* ── File Status Table ─────────────────────────────────── */
.file-status-table {
  font-size: 0.85rem;
}

.file-status-table td {
  padding: 0.4rem 0.6rem;
  vertical-align: middle;
}

.file-status-table .file-path {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Run Summary ───────────────────────────────────────── */
.run-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-md);
  text-align: center;
}

.run-summary .stat {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
}

.run-summary .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.run-summary .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.run-summary .stat-completed { border-color: var(--color-success); background: var(--color-success-light); }
.run-summary .stat-failed { border-color: var(--color-danger); background: var(--color-danger-light); }
.run-summary .stat-skipped { border-color: var(--color-warning); background: var(--color-warning-light); }

/* ── Migrate Options ───────────────────────────────────── */
.migrate-options {
  margin-top: var(--space-xl);
}

.migrate-options details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.migrate-options summary {
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  cursor: pointer;
  background: var(--color-surface-raised);
}

.migrate-options fieldset {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  padding: var(--space-lg);
  border: none;
}

/* ── Action Bar ────────────────────────────────────────── */
.action-bar {
  position: sticky;
  bottom: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) calc(-1 * var(--space-lg)) 0;
  box-shadow: 0 -4px 6px -1px rgba(0,0,0,0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.action-bar button {
  margin: 0;
}

/* ── Utilities ─────────────────────────────────────────── */
.text-muted { color: var(--color-text-secondary); }
.text-sm { font-size: 0.875rem; }
.text-center { text-align: center; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--color-text-secondary);
}

.empty-state p {
  margin-bottom: var(--space-md);
}

/* ── File Tabs ─────────────────────────────────────────── */
.file-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.tab-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.tab-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: white;
}

.tab-count {
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0,0,0,0.08);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
}

.tab-btn.active .tab-count {
  background: rgba(255,255,255,0.25);
}

/* ── Pagination Controls ──────────────────────────────── */
.pagination-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--color-border);
}

.pagination-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.pagination-buttons button {
  margin: 0;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
}

/* ── Per-File Progress Bars ───────────────────────────── */
.file-progress { min-width: 140px; }
.file-progress-bar {
  background: var(--color-border);
  border-radius: var(--radius-full);
  height: 0.5rem;
  overflow: hidden;
  margin-bottom: 0.2rem;
}
.file-progress-fill {
  background: var(--color-primary);
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}
.file-progress-text {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ── Retry Button ─────────────────────────────────────── */
.btn-retry {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  vertical-align: middle;
}

.btn-retry:hover {
  background: var(--color-danger);
  color: white;
}